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dc.contributor.advisorDalla Bella, Simone
dc.contributor.advisorRigoulot, Simon
dc.contributor.authorKadi, Melissa
dc.date.accessioned2022-01-27T20:11:55Z
dc.date.availableNO_RESTRICTIONfr
dc.date.available2022-01-27T20:11:55Z
dc.date.issued2021-11-17
dc.date.submitted2021-04
dc.identifier.urihttp://hdl.handle.net/1866/26110
dc.subjectHabiletés rythmiquesfr
dc.subjectprédiction temporellefr
dc.subjectperceptionfr
dc.subjectsynchronisation sensorimotricefr
dc.subjectpotentiel évoquéfr
dc.subjectstructure temporellefr
dc.subjectstructure formellefr
dc.subjectRhythmic abilitiesfr
dc.subjecttemporal predictabilityfr
dc.subjectbeat perceptionfr
dc.subjectsensorimotor synchronizationfr
dc.subjectevoked potentialfr
dc.subjecttemporal structurefr
dc.subjectformal structurefr
dc.subject.otherPsychology - Experimental / Psychologie expérimentale (UMI : 0623)fr
dc.titleIndividual rhythmic abilities and temporal predictability : an electrophysiological approachfr
dc.typeThèse ou mémoire / Thesis or Dissertation
etd.degree.disciplinePsychologiefr
etd.degree.grantorUniversité de Montréalfr
etd.degree.levelMaîtrise / Master'sfr
etd.degree.nameM. Sc.fr
dcterms.abstractLes habiletés rythmiques varient considérablement d’un individu à l’autre. Cependant, notre compréhension du lien entre ces variations au niveau comportemental et les marqueurs électrophysiologiques qui les sous-tendent est incertaine. L’objectif du travail actuel était d’examiner la signature cérébrale (EEG) des différences individuelles des habiletés rythmiques impliquant la prédiction temporelle (i.e., perceptuelles, sensorimotrices). Les participants (n=43) ont effectué deux tâches provenant de la Battery for the Assessment of Auditory Sensorimotor and Rhythmic abilities (BAASTA, Dalla Bella et al., 2017). De plus, l’activité cérébrale de ces participants a été enregistrée lors d’une tâche de prédiction temporelle. Cette tâche utilisant le paradigme du stimulus discordant (i.e., oddball paradigm) consistait en la présentation de sons purs standards (i.e., non pertinents) et discordants (i.e., pertinents) sur des séquences isochrones ou non-isochrones (i.e., régulières ou non). Les résultats ont montré des différences individuelles dans les habiletés rhythmiques se reflétant au niveau des composantes ERP. Chez tous les participants, des meilleures habiletés sensorimotrices ont été associées à de plus petites amplitudes de la P50 lors de la présentation de sons standards, suggérant une inhibition accrue des stimuli non pertinents. Aussi, l’amplitude de la composante N100 pourrait servir de marqueur de la capacité de traitement de la discordance des stimuli. Effectivement, les individus ayant de bonnes habiletés de traitement du rythme, présente des amplitudes moins négatives de la N100 pour les sons discordants présentés régulièrement, suggérant une discrimination accrue des sons discordants. Ainsi, ces résultats ajoutent à notre compréhension des processus sous-jacents aux différences individuelles dans les habiletés rhythmiques.fr
dcterms.abstractIt is known that rhythmic abilities vary widely in the general population. However, our understanding of the link between these variations at the behavioral level and their underlying brain electrophysiological patterns is uncertain. The aim of the present work was to investigate the electrophysiological correlates of individual differences in rhythmic abilities (i.e., perceptual, sensorimotor). Participants (n=43) performed two tasks of rhythmic abilities (beat alignment test and paced tapping) from the Battery for the Assessment of Auditory Sensorimotor and Rhythmic abilities (BAASTA, Dalla Bella et al., 2017). Moreover, the brain activity (EEG) of these participants was recorded while they performed a temporal predictability task. This task consisted in an oddball paradigm where standard (i.e., irrelevant tones) and deviant (i.e., relevant tones) sinusoidal tones were presented in isochronous (i.e., regular) and temporally random (i.e., irregular) sequences. Results indicated that individual differences in rhythmic abilities are reflected in electrophysiological markers of temporal predictability. Across all participants, improved sensorimotor abilities were associated with smaller amplitudes of the P50 auditory evoked potential to standard tones, suggesting increased inhibition of irrelevant stimuli. Moreover, the amplitude of the N100 component serve as a potential marker of the ability to process stimuli deviance. Indeed, individuals with good rhythm abilities have less negative amplitudes of N100 for deviant tones presented in the isochronous sequence, suggesting enhanced discrimination of deviant tones. Altogether, these findings add to our understanding of the processes underlying individual differences in rhythmic abilities.fr
dcterms.languageengfr


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